Column I, Column II A circular plate is expanded by heat from radius 6 cm to 6.06 cm. Approximate increase in the area is, p. 5 If an edge of a cube increases by 2%, then the percentage increase in the volume is, q. 0.72 `pi` If the rate of decrease of `(x^2)/2-2x+5` is thrice the rate of decrease of `x ,` then `x` is equal to (rate of decrease in nonzero)., r. 6 The rate of increase in the area of an equailateral triangle of side `30c m ,` when each side increases at the rate of `0. 1c m//s` , is, s. `(3sqrt(3))/2`